Toothless attachment for threshing-machines.



J. S. RICHARDSON.

TOOTHLESS ATTACHMENT FOR THRESHING MACHINES. v

APPLIOATIQN FILED FEB. 21, 1913.

1,131,086. Patented Mar.9,1915.

WITNESSES. 1w uron M757 1.

UNITED STATES PATENT OFFICE.

JOHN S. RICHARDSON, OF- GIBBS, IDAHO.

TOOTHLESS ATTACHMENT FORTHRESHING MACHINES.

Specification of Letters Patent.

Patented Mar. 9, 1915.-

Application filed February 21, 1913: Serial No. 749,918.

. To all whom it may concern to lmprovements in toothless attachments therefor, which operate in conjunction with the cylinder and concave; and such invention primarily seeks to provide mechanism of simple and economical construction so arranged as to utilize to the fullest extent the separating tendencies of the cylinder.

The main object of my invention is to provide attachments for threshing machines, such as will obviate the use of teeth and spikes as separating elements, consequently eliminating such inconveniences which accompany the latter.

Another object of this invention is to pr0- vide novel grain-separating mechanism for threshing machines including toothless channel and angle bars for connection with the cylinder and concave, respectively, such as willassure the complete separation of grain from the grain-ears, allow a free and continuous circulation of air, and increase the quality of straw.

A further object of the present device is to provide channel and angle bars, asset forth above, for eliminating use of teeth and spikes as separating'elements, the channel bars being carried upon the threshing cylinder in parallel alinement with the axis thereof, while the angle'bars are supported in a similar position upon the adjacent concave, thus providing an arrangement of engaging surfaces, such as will assure thecomplete opening of the grain ears, and allow the grain to fall directly upon the shaker elements, ineans being provided upon the channel bars for allowing exit of the straw.

A still further object of my present invention is to provide attachment of the fore, "going character which obviates the serious inconveniences heretofore encountered in devices of this nature, and to provide a simple and durable construction, such as Wlll assure eflicient operation of the entire device.

With the above and other objects in view, my invention relates to such details ofcon- ,drawings, wherein which relates generally to struction, and in bmation of parts, as will be hereinafter fully the arrangement and comdescribed and specifically pointed out in the appended claims.

In-describing my inventionin detail, reference will be had to the accompanying like characters denote like orcorresponding parts throughout the several views, and in which Figure 1 is a perspective view of a thresh ing cylinder, illustrating my improved channel bars, in conjunction therewith; Fig. 2 is an end elevation of the cylinder, illustrating more clearly the specific construction of my attachment therefor; Fig. 3 is a perspective view of one of the channel bars; and Fig. 4 is a cross sectional view of an angle iron, such as is employed upon the concave ofthe machine.

Referring now more particularly to the accompanying drawings, wherein is illus trated the preferred embodiment of my invention, I have shown the usual form of v threshing cylinder in connection with my invention for sake of clearly displaying the exact application of the latter, and it'is to be recognized thatmy invention may be employed upon cylinders of other forms and constructions without departing from the spirit thereof. The cylinder which has been illustrated consists essentially in the provision of end members 10 carrying hub elements 11 through the medium of transverse and vertical supporting arms 12." A shaft element 13 'connects the parallel al-ined hubs 11 and generally includes means for actuating the end members revolubly.

My invention -consists more essentially in the provision of channel bars 14 which have connection about the periphery of the members 10, as at 15. Spacing elementslG of suitable diameter are employed for connection with the intermediate portions of the channel bars and serve to normally hold the same in correct parallelism and to prevent displacement thereof when in operation. The channel bars mentioned are further provided with longitudinally-extending ribs 17 which are disposed adjacent the longitudinal sides thereof and serve to pro-' vide-such engaging faces as will assure a complete separation .of grain from the grain ears acted upon. In order to allow a continuous free circulation of air, and provide means for allowing exit, of straw, each of the ribs mentioned. is provided with a multiplicity of spaced-apart cut-out portions 18. Other objects of the cut-out portions will be recognized as the description and operation of the device continuesj Suitable angle bars are carried upon the concave, (not shown), and are preferably held'in parallel relation with the horizontal axis of the cylinder. The concave is in turn supported in close proximity to the cylinder, whereas the engaging faces of the ribs 17 will, upon rotation of the cylinder, be brought in close proximity to the upper engaging faces of the angle bars, this operation efliciently opening the grain ears as will be presently set forth.

The angle bars consist of a body portion 19 provided with suitable apertures, whereby it may be fastened to the adjacent portions of the concave in such manner as to obviate its displacement during operation of the cylinder. Upstanding flange elements 20 are provided upon the body adjacent one of its longitudinal edges, consequently allowing passage of grain therefrom after being separated from the grain "ears.

In the operation of my invention, the grain being fed between the cylinder and concave is forcibly brought in engagement between the ribs 17 of the channel bars and flange 20 of the angle bars. lhis operation will completely, open the grain ears in such manner as to allow the grain proper to fall through the concave on. to suitable shaker screens, not shown. Other material is then fed between the cylhnder and concave, movement thereof being allowed by .the cut-out portions 18 in the channel irons, as will be recognized.

The greatest stress is laid upon the simplicity of the present attachment, especially in view of the fact that their toothless construction provides a more durable device, and consequently a more efiicient operation.

The advantages resultant from the use of my invention will be readily comprehended by those conversant with the crude and unsatisfactory devices heretofore employed in this art.

Such changes as are permissible by the subjoined claims may be resorted to without departing from the spirit of my invention.

Having thus frilly described my invention, what I claim as new and desire to secure by Letters Patent is 1. A threshing cylinder comprising. a shaft, hoops positioned about said shaft, and longitudinally extending bars carried by said hoops, said bars being formed of channel bar provided with side flanges tapered for their entire depth and provided with alined cut outs extending the full depth of the side flanges.

2. An attachment for a threshing cylinder comprising a bar formed of channel bar having its side flanges tapered throughout their depth and provided with alined cut outs extending the full depth of the flanges.

3. An attachment fora threshing cylinder comprising a bar provided with a longitudinally extending flange tapered for its entire depth and having cut outs formed therein and extending substantially the entire depth of the flange.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN S. RICHARDSON. Witnesses:

C(E. JOHNSON, R. B. CANrrELn. 

